This is where the harmonic balancer comes in. The circular device, made of rubber and metal, is bolted at the front end of the crankshaft to help absorb vibrations. It's usually connected to the crank pulley, which drives accessories like the air conditioner.
Additional costs: Ground water wells can also be tested for radon, then, if needed, can get a water radon mitigation system installed. Installing a water radon mitigation system runs from $1,000-$4,500, and maintenance runs $0 to $150 annually.
Gum disease treatment costs may be as little as $500, or as much as $10,000, depending on the severity of the disease.The cost for a regular dental prophylaxis averages between $30 and $75, while the average cost for periodontal scaling and root planing is between $140 and $210.eriodontal maintenance costs after undergoing active therapy average $115. Active periodontal therapy  which usually consists of a locally administered antimicrobial agent delivered into the gum pockets  costs an average of $75 per tooth.